<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="jquery-1.8.1.min.js"></script>
<script type="text/javascript">
	function cksum(){
		alert();
		//$("#table1").append("<tr><td colspan='2'></td></tr>");
	}
</script>
</head>
<body>
<center>
	<table width="777" border="1" style="text-align: center;" id="table1">
		<tr>
			<td>数量:</td>
			<td><input type="text"/></td>
		</tr>
		<tr>
			<td>规格</td>
			<td><input type="text"/></td>
		</tr>
		<tr>
			<td>发料规格</td>
			<td><input type="text"/></td>
		</tr>
		<tr>
			<td colspan="2">
				<input type="button" value="计算" onclick="cksum()"/>
			</td>
		</tr>
	</table>
</center>
</body>
</html>